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Step2247 [10]
3 years ago
11

On a highway curve with a radius of 46 meters, the maximum force of static friction that can act on a 1,200 kg car going around

the curve is 7,500 Newtons. What speed limit should be posted for the curve so that cars can negotiate it safely
Physics
1 answer:
Mekhanik [1.2K]3 years ago
7 0

Answer:

v\approx 16.956\,\frac{m}{s}

Explanation:

The motion of the vehicule on a highway curve can be modelled by the following equation of equilibrium:

\Sigma F = f = m\cdot \frac{v^{2}}{R}

The maximum speed is:

v = \sqrt{\frac{f\cdot R}{m} }

v = \sqrt{\frac{(7500\,N)\cdot (46\,m)}{1200\,kg} }

v\approx 16.956\,\frac{m}{s}

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